摘要
针对直流电阻率法超前探测研究中理论研究落后于工程实践的现状和探查效果较差的问题,对隧道直流电阻率法超前探测进行了系统的正演研究。首先,利用有限单元法数值手段对含水断层等多种典型含水构造的超前探测进行了正演,得到了典型含水构造超前探测的异常响应特征,提出了干扰识别与去除这一关键技术,形成了掌子面前方有用信息提取的有效途径,为隧道含水构造的超前探测奠定了理论基础。其次,研制了隧道含水构造超前探测物理模型试验装置和相似材料并开展了物理模型试验,在实验室尺度下对直流电阻率法超前探测这一新型测量方式进行了有益的探索,验证了该方法用于含水构造探测的有效性。最后,结合实际工程进行了超前地质预报实践,实现了对含水构造的定性判断。应用效果表明,直流电阻率法超前探测研究为现场应用提供了指导和参考,并为含水构造的三维反演成像与定位奠定了基础。
Now the advanced detection by electrical resistivity method can＇t get good result,and the theoretical research lags obviously behind the practice.Therefore,systematic study on forward modeling of advanced detection is carried out.First,forward modeling is taken for typical water-bearing structures such as fault using FEM,and the abnormal response characteristics are obtained.The key technology of interference recognition and removal is proposed that provides an effective method for useful information extraction.Second,the instrument and material for physical model test is studied,and beneficial exploration for advanced detection with electrical resistivity method is taken in laboratory scale.Results verify the effectiveness of the method.Finally,advanced detection work is taken in practical project,and qualitative judgment of water-bearing structure is realized.The application effect shows that the forward modeling provides important guide for engineering application.It also laid a solid foundation for 3D electrical resistivity inversion tomography and location of water-bearing structure.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2012年第1期246-253,共8页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金重点项目(51139004)
国家自然科学青年基金项目(41102183)
山东省自然科学基金项目(ZR2011EEQ013
Y2008F22)
中国博士后科学基金项目(20110491596)
山东大学自主创新基金项目(2009JC005
2010GN059)
关键词
隧道工程
含水地质构造
超前地质预报
直流电阻率法
正演模拟
物理模型试验
工程应用
tunnels and tunneling
water-bearing structure
geological prediction
electrical resistivity method
forward modeling
physical model test
engineering application
